Q 8(a). What do you understand by isomorphism and polymorphism? Discuss monotropy by citing example of diamond and graphite. (UPSC 2025, 20 Marks, 250 Words)

Theme: Isomorphism, Polymorphism, and Monotropy in Carbon Allotropes Where in Syllabus: (The subject of the above question is Chemistry.)
समरूपता व बहुरूपता से आप क्या समझते हैं? हीरा एवं ग्रेफाइट का उदाहरण देते हुए मोनोट्रॉपी की विवेचना कीजिए।